Self-filling fountain-pen.



F. RIESENBERG. SELF FILLING FOUNTAIN PEN. APPLICATION FILED FEB. 2, I915.

Patented Apr. 25, 1916.

'tllEM eateries raarnnarorieien FELIX RIESENBERG, OF NEW YORK, N. Y., ASSIGNOR TO L. E. WATERMAN COMPANY,

OF NEW YORK, N. Y., A CORPORATION OF NEW YORK SELF-FILLING FOUNTAIN-PEN.

Application filed February 2, 1915.

To all whom it in (17 concern.

lie it known that I, Fnmx Rmsnxnnnn, a citizen of the United States, residing in borough of (Queens, city. county, and State of New York, have invented certain new and useful Improvements in Self-Filling I oHntainJeus, of which the following is a full and clear specification.

My invention relates in general to selffilling attachments for fountain pens; and more particularly to that class of self-fillers in which an operating lever pro ecting through the barrel of the fountain pen actuates a presser bar to collapse a flexible tube forming the ink reservoir. In such filling attachments it is desirable to have the attachment as inconspicuous 1 as possible, while at the same time consuming as little of the interior space of the pen barrel as possible and lying snugly within the con tour of the pen barrel when in normal position.

The object of nrv invention is to provide a self-tiller attachment in which direct movement of a presser bar toward and away from the collapsible ink reservoinis;accomplished in a positive and efficient manner without undue obstruction of the reservoir space during normal use of the pen and without disfiguring the appearance of the pen.

A further object is to provide a device which'possesses ample strength and is not liable to get. out ol repair or break the pen barrel.

A still further object is to provide a device of this character, which can be readily inserted, as a unit, in a pen barrel suitably provided for its reception and one in which the operating lever will be provided with a positive stop or limit of movement in tube collapsing position to-prevent injury to the tube and which, on the other hand, will be normally maintained within the contour of the pen barrel and not subject to accidental operation.

'I accomplish this and other objects of the invention by providing a frame in which the fulcrum pin of the operating lever is adapted to slide, the swinging motion of the lever taking 'place about a. pivotal connection of the inner end of the operating lever with the presser bar, a resilient limit piece,

serving to confine the movement of the in, ner end ofthe lever substantially to a, d1

Specification of Letters Patent.

Patented Apr, 25, it 916.

Serial No. 5,684.

rection at right angles to the frame. while at the same time serving to restore the lever to normal position and maintain it normally within the contour of the pen barrel. The fulcrum of the operating lever slides preterably within alongitudinal slot 'lormed in the frame referred to and the downward moven'ient of the inner end of the lever is limited by the arrival of the lulcrui'n pin against the end of this slot or by engagement of the tulcrumed portion of the lever against a portion of the frame for this purpose. In this position the resilience of the limit piece operates against a dead center so that the elastic ink reservoir remains collapsed un til the outer end of the lever is engaged by the operator and the lever is swung in the direction of normal position past the dead center, whereupon 'the resilient limit piece completes the return of the lever. The parts are all so connected together that the device ma be inserted as a unit in a pen barrel. which is provided with a longitudinal slot for the reception of the frame.

An embodiment of the invention illustrated in the accompanying drawing in which Figure 1 is a side elevation of parts broken away, illustrating the complete dee in tube collapsed position; '2 is a sectional ele ation of the attacl'n'nent in normal position; Fig. 3 is a similar view with the parts in tube collapsed position; Fig. l is an outside detail view illustrating the pen bai'rel with the parts mounted therein in normal position, and F 5 is a transverse section of the entire device in norn'ial Referring more specifically to said drawing, 10 indicates-the pen barrel and 11 the collapsible elastic sack, forming the ink res ervoir. The barrel 10 is slotted longitudinall at l2, the slotted portion having an. enlarged finger space 13 atits rear end. The fountain pen in this form is now ready for the reception of the self-filling attachment.

The several elements of the filling attachment are joined together, so as to be inserted as a complete unit into the slotted pen barrel. 'lhis'unit Conrprises a frame having side bars 14. and 15, united and spaced apart at their forward end by a \vob or wall 16 having forwardly projecting upper I and lower plate 17, 18, 'and at their rear ends by a web or wall 19 having rearwardly projecting upper and lower plates 20, 21. The web or Wall 19 at the rear ofthe frame does not extend to the upper surface of the side bars 14, 15, but terminates about-midway '10, after which they are turned down flat,

as shown clearly in Figs. 2 and 3, whereby the frame is secured to the pen barrel. The

side bars 14., 15 are formed to accommodate a longitudinal movement of the fulcrum pin 22 of anoperating lever 23. The preferred form 'of this connection comprising longitudinal slots 24 in the bars 14, 15, in which .the' fulcrum 22 of lever 23 can slide fore and aft. The lower end of operats ing lever 23 is suitably connected with a presser bar 25, as by means of the bifurcated end 26 of lever 23 and the ear 27 of bar 25, inserted in said bifurcated end of lever 23 and secured therein by pivot pin 28.

bar 25 to a direction at right angles to. the

ink reservoir and to the filler frame, I pro- Vide a distance piece 29, which in the present instance is secured at its rear end to plate so 21 and at its forward. end-to the presser bar 25. This distance piece 29 thus maintains the movement of the pivot pin 28 to substantially an up and down movement and 1 about this point the lever 23 swings, its ful-' 24: to the other.

crum pin 22 moving from one end of slot It will be apparent that when the fulcrum pin 22 is at the rear end of slo't"24, the lever 23 will lie flat Within the contour of the pen barrel,- with the presser bar 25 raised into its uppermost position. This constitutes the normal position of the device. In order to positively return and normally retain the parts'in this position I prefer to form the limit piece 29 as a yielding spring member tending to assume a position 'fiat against the under; side of the side bars 14 and 15. The limit'piece of lever 23 toward the rear, whereupon- 29 thus performs a double function. When the parts'are in the position shown in Fig.

3, with thepresser bar 25 depressed and the fulcrum 22 at the forward end of the slot 241 the lever 23 is in a position of dead center, so that the return tendency of dis-- tance piece 29 is effective only to hold the parts in that position and is unable to initiate the return movement of the parts into normal position. This movement is started by the operator swinging the upper end the pressure of the fulcrum pin 22 against the upperwall of slot 24 is directed at an incline to the slotted wall and the parts snap back into normal position under the infiuence'of the leaf spring 29. g

It will be apparent that the invention is the tube 11.

To confine the movement ofpresser not limited to the two functions of leaf spring cific feature of the invention in its more limited aspect.

The operation of the device .will be clearly understood from the above description. The

outer end of operating lever 23 normally rests Within the finger opening 13, where it IS readily accessible for actuation by the operator. The entire downward movement of the presser bar 25, which bears against the,

collapsible tube 11, containing the ink, is effected by the operator against the tension of the leaf spring 29 and the resistance of The air is expelled from the tube by this operation, the operator moving the lever 23 upward and forward until the fulcrum pin 22 arrives at the forward end of theslot 24 where further movement of the lever is positivelv arrested, so that undue pressure is positively prevented. The parts are firmly held in this position by the influence of leaf spring 29. until the operator initiates the return movement by swinging the upper end of the lever 23 toward the rear and moves the fulcrum pin 22 oil the dead center, after which the spring 29 completes the return to normal position and holds the parts in that position. The spring 29, as above described, also performs the function in this embodiment of the invention of confining the movement of presser bar 25 substantially to a straight line, so that rubbing friction or longitudinal movement of bar 25 upon the tube 11 is avoided. It will be apparent that to'gain a straight up and down movement of presser bar 25 from a lever actionieither the point of application of the lever must have a sliding engagement with the part actuated or the fulcrum/{of the lever must be capable of movement. transversely of the direction traversed by the presscr bar. Furthermore the presser bar will require some confining member to so limit its movement. By the aresatisfied without inducing a tilting effect in the pre'sser bar from sliding friction, and at the same time maintain a positive constructionselected by me, these conditions connection of the actuating lever with thepresser bar. The parts are all thus firmly united to act as a unit while at the same time relative. motion between the various parts in the direction described is permitted. Furthermore the point of application of the lever 23 to presser bar 25-is maintained constant, and this connection can thus be more secure. v g

It will be understood that many of the functionsperformedin my improved filler are new in themselves, and that the invcntion is therefore not limited to the precise mechanism herein shown for ;accomplishing the action despribed'.

matinee I claim:

1. In a fountain pen, the combination of a barrel having a slot, a frame set into the slot, a lever fulcrumeol in the frame, a

presser bar depressed by the lever, a yielding member rigidly connected With the presser bar and With one end of the frame, and an ink sack under the presser bar.

2. In a fountain pen, the combination of a barrel having a slot, an ink sack in the barrel, a frame element in the slot, a presser bar element for the sack, a lever having a fixed .pivotal connection With one element and a sliding pivotal connection. with the other element, and a leaf spring having its ends connected with the respective elements.

8. In a fountain pen, the combination of a barrel, having a slot, an ink sack in the barrel, apresser bar, a frame in the slot,

and two elements connected with the presser bar at points adjacent each other and connected respectively with opposite ends of the frame, one element beingan operating lever for the pre'sser bar and the other a leaf spring for restoring'the presser bar and lever.

4. In a fountain penfithe combination of a barrel having a slot, an ink sack in the barrel, a presser bar, members lining opposite 3O sides of the slot and each having a longitudinal slot, a lever in the slot, a fulcrum pin in the lever and slidably engaged in the slots of the members, a pivotal connection between the lever and presser bar, and a spring acting on the presser bar to restore the same.

5. In a fountain pen, the combination of a barrel having a slot, a frame in the slot and having lugs internally and externally engaging the barrel at the ends of the slot, a

spring anchored on one of the internal lugs of the frame, a presser bar to which. the leaf spring is connected, anactuating device mounted in the frame and adapted to depress the presser bar, and an ink sack under i the bar. 7

6. In a fountain pen, the combination of a barrel having a slot a frame in the slot and including side members having longitudinal slots adjacent one end, a lever having a fulcrum. pin disposed in the slots of the side members, said pin being so positioned that when it engages the ends of the slots the lever will engage the endof the frame, whereby the lever is arrested in a position at right-angles to the barrel, a presser bar acted on by the lever, and a sack under the presser bar and adapted to be depressed thereby.

7, [Ln ink sack deflating device for fountain pens, comprising a unitary structure consisting of an open rectangular frame, a lever permanently slidably mounted in the frame, a presser bar permanently and hingedly connected with the lever, and a spring permanently connected with the frame and With the presser bar.

8.- An ink sack deflating device for fonntain pens, coing'irisingaf a unitary structure consisting of an open rectangular frame, a lever slidably fulcrumed in one end of the frame, a leaf spring connected with the opposite end of the frame, and a presser bar pivotally connected with the lever and fixedly connected with the spring.

FELIX RIESENBERG.

itnesses:

CLINTON ll. BLOW, Jr, OC'IAVI'US lZNicn'r;

liti 

